It used to really boggle my mind too (I met a young earth creationist for the first time in my life, he was a network engineer), but then I realized a lot of people just look at techy type jobs purely to make money, not because they are science and tech nerds.

Many people go towards software engineer/computer science type stuff because that's where the money is. And honestly there is not much there that really would change someones ideology - nothing about sorting algorithms, processor opcodes, schedulers, etc etc really challenges someone's views - just tools to learn to make that paycheck. So a young earther learns what a packet is and how it gets routed from point a to point b - what exactly would challenge his view that the bible is literal in any of that? Those kinds of people don't really have any curiosity about the world and are not looking for any answers